LM4040Q AUTOMOTIVE GRADE PRECISION MICROPOWER SHUNT VOLTAGE REFERENCES Description Pin Assignments The LM4040Q is a family of bandgap circuits designed to achieve precision micro-power voltage references of 2.5V, 3.0V and 5.0V. The devices are available in 0.2% B-grade, 0.5% C-grade and 1% D-grade initial tolerances. LM4040 F (SOT23) Cathode 3 They are available in small outline SOT23 surface mount package which is ideal for applications where space is at a premium. Excellent performance is maintained over the 60A to 15mA operating current range with a typical temperature coefficient of only 20ppm/C. The device has been designed to be highly tolerant of capacitive loads therefore maintaining excellent stability. 1 * Anode 2 Top view This device offers a pin for pin compatible alternative to the industry standard LM4040 voltage reference for automotive applications. * Pin 1 must be left floating or connected to pin 2 The LM4040Q has been qualified to AEC-Q100 Grade 1 and is Automotive Grade supporting PPAPs Features Applications Small packages: SOT23 No output capacitor required Output voltage tolerance LM4040BQ 0.2% at +25C LM4040CQ 0.5% at +25C LM4040DQ 1% at +25C Low output noise 10Hz to 10kHz... 45VRMS Wide operating current range 60A to 15mA Extended temperature range -40C to +125C Low temperature coefficient 100 ppm/C (max) Green Molding in SOT23 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. "Green" Device (Note 3) Automotive Grade Qualified to AEC-Q100 Standards for High Reliability PPAP Capable (Note 4) Notes: Automotive reference voltage Data acquisition systems 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green" products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 4. Automotive products are AEC-Q100 qualified and are PPAP capable. Automotive, AEC-Q100 and standard products are electrically and thermally the same, except where specified. For more information, please refer to http://www.diodes.com/quality/product_compliance_definitions/. LM4040Q Document number: DS36989 Rev. 1 - 2 1 of 11 www.diodes.com October 2015 (c) Diodes Incorporated LM4040Q Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated) Parameter Continuous Reverse Current Continuous Forward Current Operating Junction Temperature Storage Temperature ESD Susceptibility HBM Human Body Model MM Machine Model CDM Charged Device Model Caution: Rating 20 10 -40 to +150 -55 to +150 Unit mA mA C C 4 TBC TBC kV V kV Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at conditions between maximum recommended operating conditions and absolute maximum ratings is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices.) Package Thermal Data Package JA PDIS TA = +25C, TJ = +150C SOT23 380C/W 330mW Recommended Operating Conditions Characteristic Reverse Current Operating Ambient Temperature Range LM4040Q Document number: DS36989 Rev. 1 - 2 Min 0.06 -40 Max 15 +125 Units mA C 2 of 11 www.diodes.com October 2015 (c) Diodes Incorporated LM4040Q Electrical Characteristics (@TA = +25C, unless otherwise specified.) LM4040Q-2.5 Symbol Conditions Parameter (Note 5) Reverse breakdown voltage VREF IRMIN Reverse breakdown voltage tolerance TA +25C IR = 100A +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C IR = 100A -- Minimum operating current IR = 10mA VR/T Average reverse breakdown voltage temperature coefficient -40 to +125C IR = 1mA VR/IR Reverse breakdown change with current 1mA < IR < 15mA B Limits C Limits D Limits Units V -- -- -- 20 5 21 30 60 65 68 -- 12 29 38 60 65 68 -- 25 49 63 65 70 73 -- 15 100 100 150 ppm/C 2.5 -- 45 -- mV A -- 15 -- -- -- -- +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C 0.3 0.8 1.0 1.0 6.0 8.0 8.0 0.8 1.0 1.0 6.0 8.0 8.0 1.0 1.2 1.2 8.0 10.0 10.0 mV IR = 100A IRMIN IR < 1mA Typ -- 2.5 -- ZR Dynamic output impedance IR = 1mA, f = 120Hz , IAC = 0.1IR 0.3 0.8 0.9 1.1 en Noise voltage IR = 100A, 10Hz < f < 10kHz 35 -- -- -- VRMS VR Long term stability (non-cumulative) t = 1000Hrs, IR = 100A 120 -- -- -- ppm Thermal hysteresis T = -40C to = +125C 0.08 -- -- -- % Typ B Limits C Limits D Limits Units 3.0 -- -- -- V 6 26 TBD 62 67 70 15 34 45 62 67 70 30 59 75 67 72 75 VHYST Electrical Characteristics (continued) (@TA = +25C, unless otherwise specified.) LM4040Q-3.0 Symbol VREF IRMIN Conditions Parameter (Note 5) Reverse breakdown voltage IR = 100A Reverse breakdown voltage tolerance IR = 100A Minimum operating current -- TA +25C +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C IR = 10mA VR/T Average reverse breakdown voltage temperature coefficient IR = 1mA -40 to +125C VR/IR Reverse breakdown change with current 1mA < IR < 15mA 47 -- mV A 20 -- -- -- -- 15 100 100 150 ppm/C 15 -- -- -- -- +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C 0.4 0.8 1.1 1.1 6.0 9.0 9.0 0.8 1.1 1.1 6.0 9.0 9.0 1.0 1.3 1.3 8.0 11.0 11.0 mV 0.4 0.9 0.9 1.2 IR = 100A IRMIN IR < 1mA -- -- 2.7 -- ZR Dynamic output impedance IR = 1mA, f = 120Hz, IAC = 0.1IR en Noise voltage IR = 100A, 10Hz < f < 10kHz 35 -- -- -- VRMS VR Long term stability (non-cumulative) t = 1000Hrs, IR = 100A 120 -- -- -- ppm Thermal hysteresis T = -40C to = +125C 0.08 -- -- -- % VHYST LM4040Q Document number: DS36989 Rev. 1 - 2 3 of 11 www.diodes.com October 2015 (c) Diodes Incorporated LM4040Q Electrical Characteristics (cont.) (@TA = +25C, unless otherwise specified.) LM4040Q-5.0 Symbol Conditions Parameter Reverse breakdown voltage VREF IRMIN (Note 5) TA +25C IR = 100A Reverse breakdown voltage tolerance IR = 100A Minimum operating current -- +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C IR = 10mA Average reverse breakdown voltage temperature coefficient VR/T IR = 1mA -40 to +125C IR = 100A IRMIN IR < 1mA VR/IR Reverse breakdown change with current 1mA < IR < 15mA 5.0 -- 54 -- B Limits C Limits D Limits Units V -- -- -- 10 43 60 74 80 83 25 58 75 74 80 83 50 99 125 79 85 88 mV A 30 -- -- -- -- 20 100 100 150 ppm/C 20 -- -- -- -- 0.5 1.0 1.4 1.4 8.0 12.0 12.0 1.0 1.4 1.4 8.0 12.0 12.0 1.3 1.8 1.8 10.0 15.0 15.0 mV -- 3.5 -- ZR Dynamic output impedance IR = 1mA, f = 120Hz IAC = 0.1IR 0.5 1.1 1.1 1.5 en Noise voltage IR = 100A 10Hz < f < 10kHz 80 -- -- -- VRMS VR Long term stability (non-cumulative) t = 1000Hrs, IR = 100A 120 -- -- -- ppm Themal hysteresis T = -40C to = +125C 0.08 -- -- -- % VHYST Note: +25C -40 to +85C -40 to +125C +25C -40 to +85C -40 to +125C Typ 5. Unless otherwise stated, voltages specified are relative to the ANODE pin. LM4040Q Document number: DS36989 Rev. 1 - 2 4 of 11 www.diodes.com October 2015 (c) Diodes Incorporated LM4040Q Typical Characteristics LM4040Q-2.5 1.00 1.00 0.75 0.75 0.50 0.50 0.25 VREF (%) VREF (%) 0.25 IR = 100A 0.00 -0.25 -0.25 -0.50 -0.50 -0.75 -0.75 -1.00 -40 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient -1.00 -40 120 100 CL = 1.0F Tantalum 100 1k ZR, REFERENCE IMPEDANCE () TA = 25C I R = 100A CL = 0 10k 100k 1M CL = 1.0F Tantalum 120 CL = 0 1 0.1 1k 10k 100k FREQUENCY (Hz) Reference Impedance vs. Frequency 1M 500 IR, REVERSE CURRENT (A) TA = 25C IR = 100A 440 NOISE (nV/Hz) 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient 10 0.01 100 500 460 0 TA = 25C IR = 1mA FREQUENCY (Hz) Reference Impedance vs. Frequency 480 IR = 1mA 0.00 420 400 380 360 340 400 TA = 25C 300 200 100 0 -100 -200 320 300 -1 0 1 2 FREQUENCY (Hz) Noise Voltage vs. Frequency LM4040Q Document number: DS36989 Rev. 1 - 2 3 5 of 11 www.diodes.com -300 -1 0 1 2 VR, REVERSE VOLTAGE (V) Reference Current vs. Voltage 3 October 2015 (c) Diodes Incorporated LM4040Q 1.00 1.00 0.75 0.75 0.50 0.50 0.25 0.25 VREF (%) VREF (%) Typical Characteristics LM4040Q-3.0 IR = 100A 0.00 0.00 -0.25 -0.25 -0.50 -0.50 -0.75 -0.75 -1.00 -40 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient -1.00 -40 120 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient 120 100 CL = 1.0F Tantalum 100 1k ZR, REFERENCE IMPEDANCE () TA = 25C IR = 100A CL = 0 10k 100k 10 1 0.1 0.01 100 1M FREQUENCY (Hz) Reference Impedance vs. Frequency 650 1k 10k 100k FREQUENCY (Hz) Reference Impedance vs. Frequency 1M 500 IR, REVERSE CURRENT (A) TA = 25C NOISE (nV/Hz) 600 550 500 450 300 200 100 0 -100 -200 400 10 400 100 1k 10k FREQUENCY (Hz) Noise Voltage vs. Frequency LM4040Q Document number: DS36989 Rev. 1 - 2 100k 6 of 11 www.diodes.com -300 -1 0 1 2 3 VR, REVERSE VOLTAGE (V) Reference Current vs. Voltage 4 October 2015 (c) Diodes Incorporated LM4040Q 1.00 1.00 0.75 0.75 0.50 0.50 0.25 0.25 VREF (%) VREF (%) Typical Characteristics LM4040Q-5.0 0.00 0.00 -0.25 -0.25 -0.50 -0.50 -0.75 -0.75 -1.00 -40 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient IR = 1mA -1.00 -40 120 0 40 80 TEMPERATURE (C) Reference Voltage Temperature Coefficient 120 ZR, REFERENCE IMPEDANCE () 100 100 1k 10k 100k 10 1 0.1 100 1M FREQUENCY (Hz) Reference Impedance vs. Frequency 1k 10k 100k 1M FREQUENCY (Hz) Reference Impedance vs. Frequency 1200 IR, REVERSE CURRENT (A) 500 NOISE (nV/Hz) 1000 800 600 TA = 25C 400 300 200 100 0 -100 -200 -300 400 10 100 1k 10k FREQUENCY (Hz) Noise Voltage vs. Frequency LM4040Q Document number: DS36989 Rev. 1 - 2 100k 7 of 11 www.diodes.com -400 -1 0 1 2 3 4 5 VR, REVERSE VOLTAGE (V) Reference Current vs. Voltage 6 October 2015 (c) Diodes Incorporated LM4040Q Start-Up Characteristics LM4040Q-2.5, 3.0 and 5.0 LM4040-2.5 6 INPUT & OUTPUT VOLTAGE (V) INPUT & OUTPUT VOLTAGE (V) 6 5 4 3 2 1 0 0 2 4 6 8 TIME (s) Long Pulse Response Input 5 TA = 25C RS = 30k 4 3 Output 2 1 0 10 0 2 4 6 8 TIME (s) Short Pulse Response 10 0 2 10 0 2 10 LM4040-3.0 7 INPUT & OUTPUT VOLTAGE (V) INPUT & OUTPUT VOLTAGE (V) 7 6 5 4 3 2 1 0 6 5 4 3 2 1 0 0 2 4 6 8 TIME (s) Long Pulse Response 10 4 6 8 TIME (s) Short Pulse Response LM4040-5.0 12 INPUT & OUTPUT VOLTAGE (V) INPUT & OUTPUT VOLTAGE (V) 12 10 8 6 4 2 0 0 20 40 60 80 TIME (s) Long Pulse Response LM4040Q Document number: DS36989 Rev. 1 - 2 10 8 6 4 2 0 100 8 of 11 www.diodes.com 4 6 8 TIME (s) Short Pulse Response October 2015 (c) Diodes Incorporated LM4040Q Application Information In a conventional shunt regulator application (Figure 1), an external series resistor (RS) is connected between the supply voltage, VS, and the LM4040. RS determines the current that flows through the load (I L) and the LM4040 (IR). Since load current and supply voltage may vary, RS should be small enough to supply at least the minimum acceptable I R to the LM4040 even when the supply voltage is at its minimum and the load current is at its maximum value. When the supply voltage is at its maximum and I L is at its minimum, RS should be large enough so that the current flowing through the LM4040 is less than 15 mA. VS RS IR + IL RS is determined by the supply voltage, (VS), the load and operating current, (IL and IR), and the LM4040's reverse breakdown voltage, VR. IL VR RS IR VS VR IL IR Printed circuit board layout considerations LM4040Qs in the SOT23 package have the die attached to pin 1, which results in an electrical contact between pin 2 and pin 3. Therefore, pin 1 of the SOT-23 package must be left floating or connected to pin 2. Ordering Information Order Code +25C Voltage Package Tol (V) (Note 6) LM4040B25QFTA LM4040B30QFTA 0.2% LM4040B50QFTA LM4040C25QFTA LM4040C30QFTA 0.5% LM4040C50QFTA LM4040D25QFTA LM4040D30QFTA 1% LM4040D50QFTA Note: 2.5 3.0 5.0 2.5 3.0 5.0 2.5 3.0 5.0 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 Package Code Identification Code F F F F F F F F F R2B R3B R5B R2C R3C R5C R2D R3D R5D Packing: 7" Tape and Reel Quantity Tape Width Part Number Suffix 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 8mm 8mm 8mm 8mm 8mm 8mm 8mm 8mm 8mm TA TA TA TA TA TA TA TA TA Qualification Grade (Note 7) Automotive Grade Automotive Grade Automotive Grade Automotive Grade Automotive Grade Automotive Grade Automotive Grade Automotive Grade Automotive Grade 6. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 7. LM4040Q is classified as "Automotive Grade" and supports PPAP documentation. See LM4040 datasheet for commercial qualified versions. LM4040Q Document number: DS36989 Rev. 1 - 2 9 of 11 www.diodes.com October 2015 (c) Diodes Incorporated LM4040Q Marking Information RXX : Identification code Package Outline Dimensions Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. All 7 H K1 J K SOT23 Dim Min Max Typ A 0.37 0.51 0.40 B 1.20 1.40 1.30 C 2.30 2.50 2.40 D 0.89 1.03 0.915 F 0.45 0.60 0.535 G 1.78 2.05 1.83 H 2.80 3.00 2.90 J 0.013 0.10 0.05 K 0.890 1.00 0.975 K1 0.903 1.10 1.025 L 0.45 0.61 0.55 L1 0.25 0.55 0.40 M 0.085 0.150 0.110 a 8 All Dimensions in mm GAUGE PLANE 0.25 a M A L C L1 B D G F Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. Y Z Dimensions Value (in mm) Z 2.9 X 0.8 Y 0.9 2.0 C 1.35 E C X LM4040Q Document number: DS36989 Rev. 1 - 2 E 10 of 11 www.diodes.com October 2015 (c) Diodes Incorporated LM4040Q IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. 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Copyright (c) 2015, Diodes Incorporated www.diodes.com LM4040Q Document number: DS36989 Rev. 1 - 2 11 of 11 www.diodes.com October 2015 (c) Diodes Incorporated